Stock Cos 3 for Holden 9381344 OS

[VEV8]

Can anyone help me with a stock COS3 or COS5 manual tune file to upgrade the OS 9381344 found in a VT11.. Im not sure what the process is to convert that OS to a COS.. Cheers Ryan

[joecar]

Hi Ryan,

If that OS is not mentioned in the LS1 COS Upgrade tutorial, then you have to first change to one of the OS's that is (with same transmission) (copy each/all tables one-by-one).